"Fuzzy" Touchscreen display

Mine hadn't done it for weeks, but did it again last night!
Was ok today though? Weird?

This just started to happen to mine....weird. Anyone else experiencing this?

Update,
When I got into the car this morning the screen background was White with lots of thin multicoloured vertical lines!!!!!!!!!

Radio (sound) was working, but there was no display, I tried pressing various buttons etc, etc, but no joy.

I switched the engine off and waited a few minutes, then restarted and the screen was back to normal!

I will wait to see if it happens again, but I am not sure if it may have something to do with whatever was being mentioned on the news last night regarding solar flares or electrical disturbances in the atmosphere ( I wasn't really paying attention) but I do remember the news saying something about the possibility of sat-navs being affected (although mine doesnt have sat nav)?